NTN - Large Bearings

Spherical Roller Bearings
ra
Da
ra
da
Equivalent bearing load
dynamic
PrXFrYFa
Fa
Fr
e
Fa
e Fr
X Y X Y
1 Y1 0.67 Y2
static
PorFrYo Fa
For values of e, Y1, Y2 and Yo
see the table below.
Constant Axial load factors Mass (approx.)
kg
Cylindrical tapered
e Y 1 Y 2 Y o bore bore
0.29 2.33 3.47 2.28 544 535
0.30 2.22 3.30 2.17 908 880
0.37 1.81 2.70 1.77 1,130 1,110
0.36 1.86 2.77 1.82 1,540 1,490
0.17 4.07 6.06 3.98 158 155
0.18 3.66 5.45 3.58 277 268
0.22 3.14 4.67 3.07 481 464
0.30 2.28 3.40 2.23 657 646
0.30 2.27 3.38 2.22 1,050 1,020
0.38 1.78 2.66 1.74 1,330 1,310
0.36 1.87 2.78 1.83 1,900 1,840
0.18 3.76 5.59 3.67 317 307
0.22 3.07 4.57 3.00 594 573
0.29 2.29 3.41 2.24 794 781
0.30 2.22 3.30 2.17 1,250 1,210
0.37 1.83 2.73 1.79 1,530 1,510
0.36 1.89 2.81 1.85 2,270 2,200
0.21 3.17 4.72 3.10 550 533
0.18 3.85 5.73 3.76 375 363
0.22 3.02 4.50 2.96 663 640
0.29 2.36 3.51 2.31 884 870
0.29 2.32 3.45 2.27 1,420 1,380
0.37 1.80 2.69 1.76 1,800 1,770
0.35 1.91 2.84 1.87 2,540 2,470
0.12 5.72 8.51 5.59 179 173
0.17 3.90 5.81 3.81 412 399
0.21 3.20 4.76 3.13 790 763
0.29 2.35 3.49 2.29 1,060 1,040
0.29 2.32 3.45 2.27 1,700 1,650
0.35 1.92 2.86 1.88 3,050 2,960
0.24 2.79 4.15 2.73 1,100 1,060
0.30 2.25 3.34 2.20 1,610 1,560
B-221